International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 02 | Feb 2024
p-ISSN: 2395-0072
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The impact of using Polymer Modified Bitumen in Asphalt mixs Adel Mirza Kashkool, Mohammad Mamon Hamdan --------------------------------------------------------------------------***--------------------------------------------------------------------However, asphalt pavements are deteriorating faster Abstract
than concrete pavement, which prompts the need for periodic maintenance to avoid expensive repairs of the pavement. The nature and features of asphalt pavement, combined with weather conditions and traffic loads, can result in asphalt pavement deterioration. Asphalt pavement can be subjected to various defects such as cracks, rutting, aging, fatigue, asphalt bleeding, and pot holes. The periodic repair and maintenance of roads, especially main roads, can result in traffic jams and inconvenience for road users in the event of the closure of a road or part of it. Moreover, the cost of repairing or replacing defective roads burdens governments around the world. Therefore, the use of polymer-modified bitumen has increased recently in an attempt to increase the service life of roads and reduce maintenance and repair requirements.
The economic growth of any country relies on many factors, such as natural resources, technology, manpower, regulations, and infrastructure. Infrastructure is essential for country development. Road networks are part of the infrastructure of any country. The presence of a reliable road network will facilitate the shipping of goods, which will save time and money and contribute to economic growth. A road network is considered reliable when it reduces the journey time, provides the best routes, properly covers a country or area, reduces the delay of public transportation, contributes to economic growth, and ensures a smooth ride. Building a high-quality road pavement that meets the needs of road users and ensures smooth riding requires good planning, design, and construction of the pavement.
This paper will briefly study the asphalt mixtures produced by the use of polymer modified bitumen. Also, this paper will discuss the properties of polymer modified bitumen and what distinguishes PMB from ordinary bitumen. The following points will be discussed:
The construction of durable pavement can be attained through the collaboration of reliable design, selecting high-quality and suitable raw materials, appropriate asphalt mix design, and the implementation of proper construction methods in compliance with local and international standards. The need for a pavement with a longer service life that can bear high traffic loads with fewer repair requirements has become essential nowadays. Therefore, polymer-modified bitumen has been used to improve the asphalt mix properties and produce a pavement with a higher service load and higher durability. This paper will briefly review flexible pavement and focus on reviewing the different aspects of polymer-modified bitumen (PMB). Moreover, this paper will compare the properties of PMB with ordinary bitumen. The properties of the bitumen and asphalt mixes furnished in this paper have been determined by conducting the required tests at qualified labs. All test procedures and methods are in compliance with international standards.
2. Polymer modified bitumen The PMB has been used to improve the durability of asphalt pavement, increase its service life, and reduce the need for maintenance and repair [8]. The main application of PMP asphalt mixes are roads subjected to high traffic loads and high rate of breaking force such as Roundabout, bends and intersections. The PMB is a bituminous binder mixed with a specific amount of polymer. The polymer is added to the bitumen binder to enhance its properties. The addition of polymers can improve bitumen elastic recovery, increase softening points, increase cohesive strength, and improve ductility. Furthermore, modifying bitumen reduces the temperature susceptibility of bitumen binder [5]. Adding polymers to bitumen binder increases the bitumen
Keywords: modified bitumen, Conventional bitumen, durability, PMB, traffic loads.
1. Introduction Asphalt pavement, or flexible pavement, is widely used in the construction of roads. Flexible pavement dominates the road construction industry. The wide use of asphalt pavement is a result of the unique characteristics of the pavement that can’t be found in rigid pavements. Well-constructed asphalt pavements offer road users smooth riding. Furthermore, asphalt pavements are cheaper than concrete pavements.
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Bitumen modified asphalt: a short introduction of PMB Grades of bitumen modified asphalt Uses of bitumen modified asphalt Properties of bitumen modified asphalt and ordinary bitumen Mixing and laying of bitumen modified asphalt Marshall method of mix design: Marshall properties for bitumen modified asphalt and ordinary bitumen
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